# AltKey Codes vs Zelmux

The clearest difference is iOS requirement: Zelmux at 16.0 against AltKey Codes's 18.5. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | AltKey Codes | Zelmux |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 7 MB | 6 MB |
| Requires iOS | 18.5 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ram Steenhaut](https://appshunter.io/developer/1818109693) | [Yang Zhang](https://appshunter.io/developer/1005259025) |

## What reviewers say

### AltKey Codes

[App page](https://appshunter.io/ios/app/altkey-codes/id6749019294)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zelmux

[App page](https://appshunter.io/ios/app/zelmux/id6768126927)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AltKey Codes free?

AltKey Codes is free to download, with no in-app purchases.

### Is Zelmux free?

Zelmux is free to download, with no in-app purchases.

### Do AltKey Codes or Zelmux have ads?

Neither AltKey Codes nor Zelmux shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*